NXP Semiconductors FS32K148HFT0MLUT

Overview

FS32K148HFT0MLUT from NXP Semiconductors is an automotive-grade 32-bit Arm Cortex-M4F microcontroller with 2 MB flash, 256 KB SRAM (both with ECC), 112 MHz HSRUN operation, and integrated CSEc security engine. It features dual 12-bit ADCs (up to 32 channels), three FlexCAN modules (CAN-FD capable), Ethernet MAC (10/100 Mbps with IEEE 1588), and supports ASIL-B functional safety in automotive body control modules.

For engineers reviewing the FS32K148HFT0MLUT datasheet, FS32K148HFT0MLUT pinout, FS32K148HFT0MLUT application, or FS32K148HFT0MLUT equivalent, this page delivers verified specifications, package mapping to 100-pin LQFP, validated alternatives, and design-critical timing/security constraints - including mandatory RUN-mode execution for CSEc and EEPROM operations.

Technical Context

The FS32K148HFT0MLUT implements a dual-core-capable architecture with Arm Cortex-M4F core (112 MHz HSRUN / 80 MHz RUN) and optional M0+ co-processor support via software configuration. Its memory subsystem includes 2 MB program flash with ECC, 64 KB FlexNVM for data flash/EEPROM emulation, and 4 KB FlexRAM configurable as SRAM or EEPROM backup.

Peripherals are managed through AXBS-Lite crossbar switch with eDMA (16-channel), system MPU enforcing memory access rights per master (Core, DMA, Ethernet), and dedicated low-power domains enabling VLPR/VLPS/STOP modes. Clocking uses SPLL (up to 112 MHz), FIRC (48 MHz), SIRC (8 MHz), and LPO (128 kHz), with explicit mode-dependent restrictions on CSEc and flash writes.

Key Specifications

Pinout & Package

FS32K148HFT0MLUT is packaged in a 100-pin LQFP (14 mm × 14 mm, 0.5 mm pitch) with exposed thermal pad. Pin assignments follow the S32K14x family pin-to-pin compatibility across 100-pin variants.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar automotive microcontroller applications.

Compared with FS32K148HFT0MLUT, S32K146HFT0MLUT reduces memory and connectivity for cost-sensitive tier-2 applications, while S32K148HFT0VLUT maintains identical feature set but relaxes thermal qualification - enabling trade-offs between environmental robustness and procurement cost without layout changes.

Availability

FS32K148HFT0MLUT is available at Aetrix Electronics and suitable for automotive body control modules, electric power steering systems, ADAS sensor hubs, and vehicle domain gateways requiring stable component supply across long production lifecycles.

Supply support for FS32K148HFT0MLUT includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

NXP Semiconductors is a global semiconductor leader specializing in secure connectivity solutions for automotive, industrial, and IoT markets, with deep expertise in functional safety and automotive-grade reliability.

The S32K1xx family is designed specifically for automotive electronic control units (ECUs), emphasizing ASIL-B compliance, robust power management, and integrated security - with FS32K148HFT0MLUT representing the highest integration variant in the series.

FAQ

What is the maximum operating frequency of the FS32K148HFT0MLUT and under what conditions?

The FS32K148HFT0MLUT operates at up to 112 MHz in HSRUN mode, but this requires VDD ≥ 2.97 V when the SPLL is active. At lower supply voltages (≥2.7 V), it runs from the FIRC oscillator at 48 MHz. The device must drop to 80 MHz RUN mode to execute CSEc security operations or FlexNVM writes/erases - a hard architectural constraint confirmed in the datasheet.

Does the FS32K148HFT0MLUT support CAN-FD, and how many instances are available?

Yes, the FS32K148HFT0MLUT integrates three independent FlexCAN modules, all supporting CAN-FD (ISO 11898-1). Each module supports bit rates up to 5 Mbps in FD mode and includes message RAM with hardware acceptance filtering - enabling concurrent high-speed communication on multiple vehicle networks without external transceivers beyond physical layer drivers.

What package type and pin count does the FS32K148HFT0MLUT use?

The FS32K148HFT0MLUT is supplied in a 100-pin LQFP package (14 mm × 14 mm, 0.5 mm pitch) with exposed thermal pad. This matches the pin-to-pin footprint of other S32K14x 100-pin variants, allowing hardware reuse across memory/peripheral configurations within the same package family.

How does the FS32K148HFT0MLUT handle functional safety requirements for ASIL-B compliance?

The FS32K148HFT0MLUT achieves ASIL-B readiness through hardware-enforced mechanisms: system MPU controlling crossbar-level memory access rights for all masters (Core, DMA, Ethernet), ECC on flash and SRAM, CRC module, dual watchdogs (WDOG + EWM), and lockstep-capable peripherals. These features are documented in the S32K1xx Functional Safety Manual and supported by NXP's ISO 26262-certified development process.

Can the FS32K148HFT0MLUT execute CSEc cryptographic operations while running at 112 MHz?

No. The FS32K148HFT0MLUT explicitly prohibits CSEc (Security) or EEPROM write/erase operations in HSRUN mode (112 MHz). Attempting such operations triggers error flags. The device must transition to RUN mode (80 MHz) before initiating any CSEc command or FlexNVM programming - a mandatory sequencing requirement defined in the datasheet's power management section.